feat: gitea client

internal/gitadapters/gitea/adapter.go

@@ -0,0 +1,30 @@
+package gitea
+
+import (
+	"bytes"
+	"io"
+
+	"code.gitea.io/sdk/gitea"
+)
+
+type Adapter struct {
+	client *gitea.Client
+}
+
+func New(baseURL, token string) (*Adapter, error) {
+	client, err := gitea.NewClient(baseURL, gitea.SetToken(token))
+	if err != nil {
+		return nil, err
+	}
+	return &Adapter{
+		client: client,
+	}, nil
+}
+
+func (g *Adapter) GetDiff(owner, repo string, prID int) (io.Reader, error) {
+	diff, _, err := g.client.GetPullRequestDiff(owner, repo, int64(prID), gitea.PullRequestDiffOptions{})
+	if err != nil {
+		return nil, err
+	}
+	return bytes.NewReader(diff), nil
+}